Strip scrubbing machine



June 19, 1934. s, SCHUTTE 1,963,063

STRIP SCRUBBING MACHINE Filed Sept. 2l, 1952 wedoz' HAVE/@Y 5. SCHUTTE,

yf/QQ@ m Patented June 19, 1934 UNITED STATES PATENT-OFFICE- snmscaUnING MACHINE Harry S. Schutte, (tary, Ind., assigner to AmericanSheet and Tin Plate Company, a corporation of New Jersey Applicationseptember 21, 193g, seria1Np.6s4,2ss v This invention relatesto amachine for scrubbing continuously moving wide metal strip free fromforeign matter acquired during its manufacture or otherwise.

The object is to construct such a machine to use a cleansing fluidwithout incidentally ccntaminating the freshly cleaned strip therewith,to include acasing inwhich a section of the strip -is held Abysimplified means and containing 0 sundry cleaning and/or dryingapparatus and,

`further, the provision of means for`preventing condensate formed inthis casing from wetting thev exiting strip. Further objects notincluded in this necessarily brief recital may be inferred from thefollowing disclosure of an example'of the invention.

Referring to the drawing:

Figure r1 is a side elevation of a strip scrub` bing machine.constructed according to the invention.l

Figure 2 is a cross-section from the line III-1I in ,Figure 1.

Figure 3 is a. partial end elevation of Figure 2.

The metal strip 1 leaves a Washing tank 2,.is.

guided upwardly in its moving direction by a large roller 3 and thenhorizontally to a stand of pulling pinch-rolls 4. 1

A stand of scrubbing' rolls 5 is positioned so that the upwardlydirected strip passes therethrough. These scrubbing rolls may becylindrical bristle brushes and suitably supported by a housing 6carryingroll pressure applying means 7. They are belted to a motor 8 forrotation in an oppo-l site direction to that of the strip. This not onlyassures greater scrubbing action but, by suitably regulating theirrotating speed, serves to maintain the strip taut to the pinch-rolls 4.

Nozzles 9 extend the Width of the strip and are constructed to throwjets of Water or other fluid into the upper nip of the scrubbing rolls5. Pref erably, the volume of this water is sufficient to create a uidstream which runs down the strip 1 and into `the tank 2. This carriesall of the removed contamination away from the cleaned strip, as well asthe dirty water.

AA casing 10 is constructed to cover the horizontal portionof the stripand is provided with strip betweenthem and the rst stand. While therolls 13 are not absolutely necessary, their use is preferable as aprecautionary measure for the removal of anything the first stand mightmiss. Y

'Ihe casing also contains a number of different length nozzle members 14which are arranged to eject Water jets on both sides of the strip justas it leaves the second stand of scrubbing rolls 13. These areselectively connected to a hot water tank 15 through valves 16.

' In'the present instance hot water is furnished the tank 15 by aconventional steam siphon heating arrangement 17. Other means forkeep-lY ing the Water hot in the tank 15 might obviously 70 besubstituted.

The nozzle members 14 are provided in diierent lengths so that they mayaccommodate diierent strip widths. The valves 16 are operated to connectthe nozzle members closest the strip width 75 being cleansed, with thehot water tank 16. They are constructed -to throw suflicient hot wateron the strip to raise its temperature softhat its drying is eifected byevaporation. y

Just beyond the nozzle members 14 and in 80 the casing 10 is arranged anidling stand of squeezer rolls 18 which serve to remove the greater partof the hot water from the strip. These squeezer rolls are not indicatedin' detail', because they may be constructed ina number of ways. Forinstance, they may consist of a pair of resilient rubber rolls with.idle shafts.. and pressed against the metal strip by suitableappaiatus.

The metal-strip leaves the exit 12 of the cas- 90 ing 10 in a dry state'and passes through the pulling pinch-rolls 4 onto other apparatus. Because of the steam and moisture in'the casing 10 resulting from the hotwater application and. subsequent evaporation, there is danger of con-`densate running down the verticalwall above the exit 12 and dropping onthe dried strip. This is eiectively prevented by a small trough orgutter 19 'which runs the width vof the exit l2 above the strip. Thiscatches any. such condensate and prevents it wetting. the exiting strip.f- While I have shown and described one specifi embodiment of myinvention' in accordance with the patent statutes it will be understoodthat I do not wish to be limited thereto, since various modificationsmay be made without departing from the scope of my invention as definedin the following claims.

I claim: Y. 1. A machine for scrubbing continuously movllo ing widemetal strip including the combination of a casing having an entrance andexit for the moving strip, means for scrubbing 'said strip, means insaidcasing for drying said strip and a trough or gutter constructed andarranged over the strip passing through said exit to catch condensateforming on the inside of said casing.

2. A Imachine for scrubbing continuously moving wide metal stripincluding means for directing the strip upwardly in its moving directionand then horizontally, a stand of scrubbing rolls through which saidstrip .passes while moving in its upward direction, a stand ofpinch-rolls for pulling the horizontally directed strip portion, meansfor rotating said scrubbing rolls opposite,- ly to the strips movingdirection, noz'zles constructed and arranged to eject suicient fluidinto.

the upper nip of said scrubbing rolls on both sides of the strip toproduce a downwardly moving flow, a casing having an entrance and exitfor the horizontally directed strip, a plurality of different lengthfluid ejecting means right angularly arranged on vboth sides of thestrip in said casing,`means for selectively supplying vsaid fluidejecting means with heated uid, means for re-

